diff options
| -rw-r--r-- | drivers/scsi/hpsa.c | 166 | ||||
| -rw-r--r-- | drivers/scsi/hpsa_cmd.h | 7 |
2 files changed, 167 insertions, 6 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 563cf2f588d2..498aaa872d06 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -2307,6 +2307,85 @@ static int add_ext_target_dev(struct ctlr_info *h, } /* + * Get address of physical disk used for an ioaccel2 mode command: + * 1. Extract ioaccel2 handle from the command. + * 2. Find a matching ioaccel2 handle from list of physical disks. + * 3. Return: + * 1 and set scsi3addr to address of matching physical + * 0 if no matching physical disk was found. + */ +static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h, + struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr) +{ + struct ReportExtendedLUNdata *physicals = NULL; + int responsesize = 24; /* size of physical extended response */ + int extended = 2; /* flag forces reporting 'other dev info'. */ + int reportsize = sizeof(*physicals) + HPSA_MAX_PHYS_LUN * responsesize; + u32 nphysicals = 0; /* number of reported physical devs */ + int found = 0; /* found match (1) or not (0) */ + u32 find; /* handle we need to match */ + int i; + struct scsi_cmnd *scmd; /* scsi command within request being aborted */ + struct hpsa_scsi_dev_t *d; /* device of request being aborted */ + struct io_accel2_cmd *c2a; /* ioaccel2 command to abort */ + u32 it_nexus; /* 4 byte device handle for the ioaccel2 cmd */ + u32 scsi_nexus; /* 4 byte device handle for the ioaccel2 cmd */ + + if (ioaccel2_cmd_to_abort->cmd_type != CMD_IOACCEL2) + return 0; /* no match */ + + /* point to the ioaccel2 device handle */ + c2a = &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex]; + if (c2a == NULL) + return 0; /* no match */ + + scmd = (struct scsi_cmnd *) ioaccel2_cmd_to_abort->scsi_cmd; + if (scmd == NULL) + return 0; /* no match */ + + d = scmd->device->hostdata; + if (d == NULL) + return 0; /* no match */ + + it_nexus = cpu_to_le32((u32) d->ioaccel_handle); + scsi_nexus = cpu_to_le32((u32) c2a->scsi_nexus); + find = c2a->scsi_nexus; + + /* Get the list of physical devices */ + physicals = kzalloc(reportsize, GFP_KERNEL); + if (hpsa_scsi_do_report_phys_luns(h, (struct ReportLUNdata *) physicals, + reportsize, extended)) { + dev_err(&h->pdev->dev, + "Can't lookup %s device handle: report physical LUNs failed.\n", + "HP SSD Smart Path"); + kfree(physicals); + return 0; + } + nphysicals = be32_to_cpu(*((__be32 *)physicals->LUNListLength)) / + responsesize; + + + /* find ioaccel2 handle in list of physicals: */ + for (i = 0; i < nphysicals; i++) { + /* handle is in bytes 28-31 of each lun */ + if (memcmp(&((struct ReportExtendedLUNdata *) + physicals)->LUN[i][20], &find, 4) != 0) { + continue; /* didn't match */ + } + found = 1; + memcpy(scsi3addr, &((struct ReportExtendedLUNdata *) + physicals)->LUN[i][0], 8); + break; /* found it */ + } + + kfree(physicals); + if (found) + return 1; + else + return 0; + +} +/* * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, * logdev. The number of luns in physdev and logdev are returned in * *nphysicals and *nlogicals, respectively. @@ -3423,12 +3502,20 @@ static void hpsa_get_tag(struct ctlr_info *h, &h->ioaccel_cmd_pool[c->cmdindex]; *tagupper = cm1->Tag.upper; *taglower = cm1->Tag.lower; - } else { - *tagupper = c->Header.Tag.upper; - *taglower = c->Header.Tag.lower; + return; + } + if (c->cmd_type == CMD_IOACCEL2) { + struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *) + &h->ioaccel2_cmd_pool[c->cmdindex]; + *tagupper = cm2->Tag.upper; + *taglower = cm2->Tag.lower; + return; } + *tagupper = c->Header.Tag.upper; + *taglower = c->Header.Tag.lower; } + static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, struct CommandList *abort, int swizzle) { @@ -3524,6 +3611,71 @@ static struct CommandList *hpsa_find_cmd_in_queue_by_tag(struct ctlr_info *h, return NULL; } +/* ioaccel2 path firmware cannot handle abort task requests. + * Change abort requests to physical target reset, and send to the + * address of the physical disk used for the ioaccel 2 command. + * Return 0 on success (IO_OK) + * -1 on failure + */ + +static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, + unsigned char *scsi3addr, struct CommandList *abort) +{ + int rc = IO_OK; + struct scsi_cmnd *scmd; /* scsi command within request being aborted */ + struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */ + unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */ + unsigned char *psa = &phys_scsi3addr[0]; + + /* Get a pointer to the hpsa logical device. */ + scmd = (struct scsi_cmnd *) abort->scsi_cmd; + dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata); + if (dev == NULL) { + dev_warn(&h->pdev->dev, + "Cannot abort: no device pointer for command.\n"); + return -1; /* not abortable */ + } + + if (!dev->offload_enabled) { + dev_warn(&h->pdev->dev, + "Can't abort: device is not operating in HP SSD Smart Path mode.\n"); + return -1; /* not abortable */ + } + + /* Incoming scsi3addr is logical addr. We need physical disk addr. */ + if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) { + dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n"); + return -1; /* not abortable */ + } + + /* send the reset */ + rc = hpsa_send_reset(h, psa, HPSA_RESET_TYPE_TARGET); + if (rc != 0) { + dev_warn(&h->pdev->dev, + "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", + psa[0], psa[1], psa[2], psa[3], + psa[4], psa[5], psa[6], psa[7]); + return rc; /* failed to reset */ + } + + /* wait for device to recover */ + if (wait_for_device_to_become_ready(h, psa) != 0) { + dev_warn(&h->pdev->dev, + "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", + psa[0], psa[1], psa[2], psa[3], + psa[4], psa[5], psa[6], psa[7]); + return -1; /* failed to recover */ + } + + /* device recovered */ + dev_info(&h->pdev->dev, + "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", + psa[0], psa[1], psa[2], psa[3], + psa[4], psa[5], psa[6], psa[7]); + + return rc; /* success */ +} + /* Some Smart Arrays need the abort tag swizzled, and some don't. It's hard to * tell which kind we're dealing with, so we send the abort both ways. There * shouldn't be any collisions between swizzled and unswizzled tags due to the @@ -3537,6 +3689,14 @@ static int hpsa_send_abort_both_ways(struct ctlr_info *h, struct CommandList *c; int rc = 0, rc2 = 0; + /* ioccelerator mode 2 commands should be aborted via the + * accelerated path, since RAID path is unaware of these commands, + * but underlying firmware can't handle abort TMF. + * Change abort to physical device reset. + */ + if (abort->cmd_type == CMD_IOACCEL2) + return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr, abort); + /* we do not expect to find the swizzled tag in our queue, but * check anyway just to be sure the assumptions which make this * the case haven't become wrong. diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index f6430b428fb0..e048167b2d9f 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -82,8 +82,9 @@ #define ATTR_ACA 0x07 /* cdb type */ -#define TYPE_CMD 0x00 -#define TYPE_MSG 0x01 +#define TYPE_CMD 0x00 +#define TYPE_MSG 0x01 +#define TYPE_IOACCEL2_CMD 0x81 /* 0x81 is not used by hardware */ /* Message Types */ #define HPSA_TASK_MANAGEMENT 0x00 @@ -525,7 +526,7 @@ struct io_accel2_cmd { * FIXME: this can't be all I need mfm */ #define IOACCEL2_IU_TYPE 0x40 -#define IU_TYPE_TMF 0x41 +#define IOACCEL2_IU_TMF_TYPE 0x41 #define IOACCEL2_DIR_NO_DATA 0x00 #define IOACCEL2_DIR_DATA_IN 0x01 #define IOACCEL2_DIR_DATA_OUT 0x02 |